Myoclonic jerk

Pronunciation

Definition 1

A sudden, brief, strong contraction of a muscle or group of muscles that cannot be controlled. (NCI Dictionary)

Definition 2

A sudden, involuntary contraction of a muscle or group of muscles; these movements may develop as a symptom of a number of neurological diseases including epilepsy, Parkinson's disease, Alzheimer's disease, or Creutzfeldt-Jacob disease. (NCI Thesaurus)

Definition 3

Involuntary shock-like contractions, irregular in rhythm and amplitude, followed by relaxation, of a muscle or a group of muscles. This condition may be a feature of some CENTRAL NERVOUS SYSTEMS DISEASES (e.g., EPILEPSY, MYOCLONIC). Nocturnal myoclonus may represent a normal physiologic event or occur as the principal feature of the NOCTURNAL MYOCLONUS SYNDROME. (From Adams et al., Principles of Neurology, 6th ed, pp102-3). (NLM, Medical Subject Headings)

YOU MAY ALSO LIKE

Myocardium

The striated muscle tissue of the heart enveloped by the epicardium and the endocardium.

Myocarditis

Inflammation of the muscle tissue of the heart.

Myocardial Perfusion Imaging

A procedure that captures pictures of blood flow throughout the heart muscle.

Myocardial Ischemia by ECG Finding

An electrocardiographic finding of ST and T wave changes consistent with impaired myocardial perfusion.

Myocardial Infarction ECG Assessment

An electrocardiographic assessment of findings that suggest the occurrence of a myocardial infarction.

Myocardial Infarction by ECG Finding

An electrocardiographic finding of pathologic Q waves, which is suggestive of myocardial infarction of one or more regions of the heart. No…